FR2419981A1 - Appts. for the treatment of liq. metal - comprises heated permanent electrodes which are vertically displaceable into and out of the metal bath - Google Patents

Appts. for the treatment of liq. metal - comprises heated permanent electrodes which are vertically displaceable into and out of the metal bath

Info

Publication number
FR2419981A1
FR2419981A1 FR7822461A FR7822461A FR2419981A1 FR 2419981 A1 FR2419981 A1 FR 2419981A1 FR 7822461 A FR7822461 A FR 7822461A FR 7822461 A FR7822461 A FR 7822461A FR 2419981 A1 FR2419981 A1 FR 2419981A1
Authority
FR
France
Prior art keywords
metal
cylinder
chamber
treatment
electrodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7822461A
Other languages
French (fr)
Other versions
FR2419981B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold Heraeus GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leybold Heraeus GmbH filed Critical Leybold Heraeus GmbH
Publication of FR2419981A1 publication Critical patent/FR2419981A1/en
Application granted granted Critical
Publication of FR2419981B1 publication Critical patent/FR2419981B1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/08—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C22B9/106—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents the refining being obtained by intimately mixing the molten metal with a molten salt or slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
    • H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The treatment of liq. metal in baths for e.g. degasification of the metal involves the use of a non-atmospheric conditions and electric arc heating using permanent electrodes heated by an alternating current. The treatment involves the use of an appts. having a gas-tight chamber with an upper part on which several electrode advance mechanisms are positioned, the mechanisms being controlled by pressurised fluid. The mechanisms comprise jacks formed of a cylinder, piston and rod which is electrically and/or mechanically connected with a corresp. permanent electrode. At least one support element is located outside the cylinder of each jack upon the upper part of the chamber, the element being secured to the piston rod. The cylinder is movable relative to the piston and is axially guided for movement through the upper part of the chamber to enter the chamber. The lower end of the cylinder has an attachment to which a permanent electrode can be secured. The electrodes are positioned without producing large forces tending to make them vibrate and possibly fracture so that the electrodes even when subjected to high voltages last longer than in conventional degasification devices.
FR7822461A 1978-03-18 1978-07-28 DEVICE AND METHOD FOR TREATING METAL BATHS UNDER NON-ATMOSPHERE CONDITIONS WITH ELECTRIC ARC HEATING AND PERMANENT ELECTRODES Expired FR2419981B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782811877 DE2811877A1 (en) 1978-03-18 1978-03-18 DEVICE FOR TREATMENT OF METAL MELT UNDER NON-ATMOSPHERIC CONDITIONS AND WITH ARC HEATING USED BY PERMANENT ELECTRODES AND OPERATING PROCEDURES FOR THIS DEVICE

Publications (2)

Publication Number Publication Date
FR2419981A1 true FR2419981A1 (en) 1979-10-12
FR2419981B1 FR2419981B1 (en) 1985-07-12

Family

ID=6034820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822461A Expired FR2419981B1 (en) 1978-03-18 1978-07-28 DEVICE AND METHOD FOR TREATING METAL BATHS UNDER NON-ATMOSPHERE CONDITIONS WITH ELECTRIC ARC HEATING AND PERMANENT ELECTRODES

Country Status (4)

Country Link
AT (1) ATA781278A (en)
BE (1) BE871007A (en)
DE (1) DE2811877A1 (en)
FR (1) FR2419981B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494536A1 (en) * 1980-11-17 1982-05-21 Leybold Heraeus Gmbh & Co Kg GRAPHITE ELECTRODE FOR MOUNTING IN AN ELECTRIC OVEN ELECTRODE HOLDER
EP0135473A1 (en) * 1983-08-13 1985-03-27 Arc Technologies Systems, Ltd. Electrode assembly for arc furnaces
WO1987004583A1 (en) * 1986-01-23 1987-07-30 C. Conradty Nürnberg Gmbh & Co. Kg Three-phase arc furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144926C2 (en) * 1980-11-17 1987-04-16 Leybold-Heraeus GmbH, 5000 Köln Graphite electrode for use in an electrode holder of an electric furnace
DE3722680A1 (en) * 1987-07-09 1989-01-19 Leybold Ag Melting furnace with weight-dependent control of the melting block

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240856A (en) * 1963-06-11 1966-03-15 Mc Graw Edison Co Electric arc furnace
US3393264A (en) * 1964-06-15 1968-07-16 Lectromelt Corp Electric arc furnaces
GB1154491A (en) * 1965-06-09 1969-06-11 Finkl & Sons Co Method and apparatus for Treating Molten Metal under Vacuum
DE1915961A1 (en) * 1969-03-28 1971-01-28 Schlienger Eng Co Arc furnace
FR2215775A1 (en) * 1973-01-25 1974-08-23 Standard Messo Duisburg Vacuum arc heating of metallurgical vessels - in which the worn part of the electrode can be removed without removing and cooling the vacuum chamber cover
DE2739483A1 (en) * 1976-09-01 1978-03-02 Canada Steel Co COMPOSED ELECTRODE FOR ARC FURNACES

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB700580A (en) * 1951-09-04 1953-12-02 William Enoch Moore Apparatus for controlling electric arc furnace electrodes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240856A (en) * 1963-06-11 1966-03-15 Mc Graw Edison Co Electric arc furnace
US3393264A (en) * 1964-06-15 1968-07-16 Lectromelt Corp Electric arc furnaces
GB1154491A (en) * 1965-06-09 1969-06-11 Finkl & Sons Co Method and apparatus for Treating Molten Metal under Vacuum
DE1565534B2 (en) * 1965-06-09 1975-07-24 Charles W. Finkl Process for the vacuum treatment of steel
DE1915961A1 (en) * 1969-03-28 1971-01-28 Schlienger Eng Co Arc furnace
FR2215775A1 (en) * 1973-01-25 1974-08-23 Standard Messo Duisburg Vacuum arc heating of metallurgical vessels - in which the worn part of the electrode can be removed without removing and cooling the vacuum chamber cover
DE2739483A1 (en) * 1976-09-01 1978-03-02 Canada Steel Co COMPOSED ELECTRODE FOR ARC FURNACES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494536A1 (en) * 1980-11-17 1982-05-21 Leybold Heraeus Gmbh & Co Kg GRAPHITE ELECTRODE FOR MOUNTING IN AN ELECTRIC OVEN ELECTRODE HOLDER
EP0135473A1 (en) * 1983-08-13 1985-03-27 Arc Technologies Systems, Ltd. Electrode assembly for arc furnaces
WO1987004583A1 (en) * 1986-01-23 1987-07-30 C. Conradty Nürnberg Gmbh & Co. Kg Three-phase arc furnace
EP0234270A1 (en) * 1986-01-23 1987-09-02 C. CONRADTY NÜRNBERG GmbH & Co. KG Three-phase arc furnace

Also Published As

Publication number Publication date
DE2811877C2 (en) 1988-10-27
FR2419981B1 (en) 1985-07-12
BE871007A (en) 1979-02-01
DE2811877A1 (en) 1979-10-04
ATA781278A (en) 1993-12-15

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Legal Events

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